Description
Holley 20-180P Details
Holley’s Premium Mid-Mount complete accessory system has all accessories pulled in tighter than other accessory drives. At the heart of the system is a “bracketless” design (Patent Pending), where the accessories bolt directly to the water pump for a clean, integrated form. The design offers superb engine visibility to show off your horsepower, not your accessories. Among the many swap friendly features are bottom heater outlets for clearance in tight applications. The Holley designed alternator is just as innovative. This premium alternator utilizes 6-phase technology as found on the C7 Corvette. The water pump also shares its design efficiencies with that of the C7 Corvette. The compact and reliable SD7 A/C compressor and Type II P/S pump with baffled reservoir are also integrated.The Mid-Mount drive completes Holley’s trilogy of accessory solutions giving a third option compared to the High and Low-Mount previously released. All three accessory solutions are for LS engines.When we say “complete”, we mean complete. The Mid-Mount system comes with everything you need. All accessories are included; the water pump, A/C compressor, Alternator, P/S pump with reservoir, and an SFI certified damper w/hard anodized billet crank pulley. All pulleys and the belt are supplied. Even heater hose adapters, power steering to -6 AN hardline, and the alternator plug/harness are included. Easy assembly was a priority during the entire development of this accessory solution. Color graphical instructions walk you through every step of the ultra-easy installation.The Premium Mid-Mount system comes with dress up pulley covers and an SFI certified damper. Partnered with this damper is a billet 6061-T6 aluminum hard anodized crank pulley. This system is ready for the racetrack if you want to play or just be ready for anything on the street.
- Steam tube input port
- Shortened top outlet nipple for more radiator hose turns and routing room
- OE pulley ratios for optimal accessory performance
- No adapters/spacers required!
- Billet tensioner cover
- Billet alternator, and compressor pulley covers
- SFI certified damper w/hard anodized billet crank pulley
- Works with all common aftermarket and factory Throttle bodies and intakes.
- Works with VVT applications
- Works with Hooker turbo manifolds.
- Fits ALL LS engines except with dry sump and/or supercharger.
- Polished Finish
Holley 20-180P Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 20-180P |
| Brand | Holley |
| Pulley Style | Serpentine |
| Crankshaft Pulley Included | Yes |
| Crankshaft Pulley Material | Billet Aluminum |
| Crankshaft Pulley Finish | Black anodized |
| Crankshaft Pulley Grooves | 6-groove, serpentine |
| Water Pump Included | Yes |
| Water Pump Material | Cast Aluminum |
| Water Pump Finish | Polished |
| Water Pump Pulley Included | Yes |
| Water Pump Pulley Material | Steel |
| Water Pump Pulley Grooves | Non-ribbed |
| Power Steering Pump Included | Yes |
| Power Steering Pump Bracket Finish | Polished |
| Power Steering Pump Bracket Material | Aluminum |
| Power Steering Pump Finish | Natural |
| Power Steering Pump Reservoir Finish | Black |
| Power Steering Pump Reservoir Included | Yes |
| Power Steering Pump Reservoir Material | Plastic |
| Power Steering Pump Reservoir Style | Attached |
| Power Steering Pump Style | GM Type 2 |
| Power Steering Pulley Attachment | Press Fit |
| Power Steering Pulley Finish | Black Powder Coated |
| Power Steering Pulley Grooves | 6-groove, serpentine |
| Power Steering Pulley Included | Yes |
| Power Steering Pulley Material | Steel |
| Alternator Included | Yes |
| Alternator Material | Cast Aluminum |
| Alternator Finish | Polished |
| Alternator Amperage | 150 amp |
| Alternator Pulley Finish | Black Powder Coated |
| Alternator Pulley Grooves | 6-groove, Serpentine |
| Alternator Pulley Included | Yes |
| Alternator Pulley Material | Steel |
| Alternator Bracket Finish | Polished |
| Alternator Bracket Material | Cast Aluminum |
| Alternator Brackets Included | Yes |
| A/C Compressor Finish | Polished |
| A/C Compressor Included | Yes |
| A/C Compressor Type | Sanden SD-7 |
| A/C Pulley Finish | Black Powder Coated |
| A/C Pulley Grooves | 6-groove, Serpentine |
| A/C Pulley Included | Yes |
| A/C Pulley Material | Billet Aluminum |
| A/C Bracket Finish | Polished |
| A/C Bracket Included | Yes |
| A/C Bracket Material | Cast Aluminum |
| Idler Brackets Included | Yes |
| Idler Included | Yes |
| Tensioner Included | Yes |
| Tensioner Style | Spring-loaded |
| Tensioner Cover Finish | Polished |
| Tensioner Cover Included | Yes |
| Tensioner Cover Material | Billet Aluminum |
| Hardware Included | Yes |
| GENERAL | |
| GTIN Code | 090127029466 |
| Sold in Quantity | Kit |
| Crankshaft Pulley Bolt Hole Quantity | Three |
| Water Pump Pulley Finish | Black powder coated |
| Tensioner Pulley Finish | Black |
| Alternator Fan Included | No |
| Belt Included | Yes |
| Power Steering Brackets Included | Yes |
| Idler Pulley Finish | Black |
| Air Conditioning Pulley Included | Yes |









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